International audienceThe pension reform announced by Mr Emmanuel Macron during the French presidential election campaign was based on certain general principles, often summed up by the commitment that “each euro contributed gives the same entitlements”. Since the details of the reform are not yet known, this policy brief aims to contribute to the public debate by presenting the basic principles of a pay-as-you-go system that, regardless of which target system is selected, is well conceived, and to emphasise the points where choices and trade-offs need to be made by the democratic debate. We thus highlight the advantages of revaluating pension entitlements with wage growth, and of setting transparent rules for changing pension formulas acco...